Jökulsárlón ends at the Diamond Beach. It is a beautiful black sand beach where you can see ice-cubes and crystals that are washed up from the sea, which is actually very beautiful especially at dawn, sunrise or sunset because then light illuminates the icebergs.
Sometimes it's worth to experience very cold and to get soaked the boots for getting scenes like this.
Jökulsárlón, Iceland. March 2017